Results 31 to 40 of about 8,111 (188)

Photoinhibition of comammox reaction in Nitrospira inopinata in a dose- and wavelength-dependent manner

Frontiers in Microbiology, 2022
Apparent contribution of complete ammonia-oxidizing organisms (comammox) to the global nitrogen cycle highlights the necessity for understanding niche differentiation of comammox bacteria among other ammonia oxidizers. While the high affinity for ammonia
Ekaterina Y. Gottshall, Bruce Godfrey, Bo Li, Britt Abrahamson, Wei Qin, Mari Winkler   +5 more
doaj   +1 more source

Seasonal, sex- and plant size-related effects on photoinhibition and photoprotection in the dioecious Mediterranean dwarf palm, Chamaerops humilis

Frontiers in Plant Science, 2016
In Mediterranean-type ecosystems plants are exposed to several adverse environmental conditions throughout the year, ranging from drought stress during the warm and dry summers to chilling stress due to the typical drop in temperatures during winters ...
Melanie Morales, Marta Pintó-Marijuan, Sergi Munné-Bosch   +2 more
doaj   +1 more source

The impact of light/dark regimes on structure and physiology of Chlorella vulgaris biofilms

Frontiers in Microbiology, 2023
IntroductionBiofilm-based microalgae production technologies offer enormous potential for improving sustainability and productivity. However, the light pattern induced by these technologies is a key concern for optimization.MethodsIn this work, the ...
Yan Gao, Olivier Bernard, Andrea Fanesi, Patrick Perré, Filipa Lopes   +4 more
doaj   +1 more source

Proton-mediated photoprotection mechanism in photosystem II

Frontiers in Plant Science, 2022
Photo-induced charge separation, which is terminated by electron transfer from the primary quinone QA to the secondary quinone QB, provides the driving force for O2 evolution in photosystem II (PSII).
Yu Sugo, Hiroshi Ishikita, Hiroshi Ishikita   +2 more
doaj   +1 more source

Fotossíntese e fotoinibição em mogno e acariquara em função da luminosidade e temperatura foliar Photosynthesis and photoinhibition in mahogany and acariquara as a function of irradiance and leaf temperature

Pesquisa Agropecuária Brasileira, 2007
A fotoinibição pode ser intensificada por fatores de estresse como alta temperatura. O objetivo deste trabalho foi determinar os efeitos da luminosidade e temperatura na fotossíntese e na recuperação da fotoinibição sob baixa irradiância em mogno ...
Daniela Pereira Dias, Ricardo Antonio Marenco   +1 more
doaj   +1 more source

Higher Reduced State of Fe/S-Signals, with the Suppressed Oxidation of P700, Causes PSI Inactivation in Arabidopsis thaliana

Antioxidants, 2022
Environmental stress increases the risk of electron accumulation in photosystem I (PSI) of chloroplasts, which can cause oxygen (O2) reduction to superoxide radicals and decreased photosynthetic ability.
Riu Furutani, Shinya Wada, Kentaro Ifuku, Shu Maekawa, Chikahiro Miyake   +4 more
doaj   +1 more source

Seed traits of species from South Brazilian grasslands with contrasting distribution [PDF]

Acta Botânica Brasílica
South Brazilian grasslands are among the most species-rich grasslands worldwide yet they have been suffering ongoing degradation due to land-use. Little is known about the reproductive ecology of the native species of these grasslands. Thus, our goal was
Alexandre Cristante Martins, Rafaella Migliavacca Marchioretto, Ariane Tonetto Vieira, Eudes Maria Stiehl-Alves, Eliane Kaltchuk dos Santos, Tatiana Teixeira de Souza-Chies   +5 more
doaj   +2 more sources

The zeaxanthin epoxidase is degraded along with the D1 protein during photoinhibition of photosystem II

Plant Direct, 2019
The xanthophyll zeaxanthin is synthesized in chloroplasts upon high light exposure of plants and serves central photoprotective functions. The reconversion of zeaxanthin to violaxanthin is catalyzed by the zeaxanthin epoxidase (ZEP).
Stephanie Bethmann, Michael Melzer, Nadine Schwarz, Peter Jahns   +3 more
doaj   +1 more source

Overexpression of GmRIQ2-like (Glyma.04G174400) Enhances the Tolerance of Strong Light Stress and Reduces Photoinhibition in Soybean (Glycine max (L.) Merr.)

Agriculture, 2020
Soybean (Glycine max (L.) Merr.) is an important crop that serves as a source of edible oil and protein. However, little is known about its molecular mechanism of adaptation to extreme environmental conditions.
Jing Deng, Dongmei Li, Huayi Yin, Li Ma, Jiukun Zhang, Binbin Zhang   +5 more
doaj   +1 more source

Photosystem II functionality in barley responds dynamically to changes in leaf manganese status

Frontiers in Plant Science, 2016
A catalytic manganese (Mn) cluster is required for the oxidation of water in the oxygen-evolving complex (OEC) of photosystem II (PSII) in plants. Despite this essential role of Mn in generating the electrons driving photosynthesis, limited information ...
Sidsel Birkelund Schmidt, Marta Powikrowska, Ken Suszkiewicz Krogholm, Bianca Naumann-Busch, Jan K. Schjoerring, Søren Husted, Poul Erik Jensen, Pai Rosager Pedas, Pai Rosager Pedas   +8 more
doaj   +1 more source